Canadian Medical Guide > Chemicals and Drugs > Organic Chemicals > Hydrocarbons > Terpenes > Carotenoids Terms and Definitions

Carotenoids

Medical Definition:	The general name for a group of fat-soluble pigments found in green, yellow, and leafy vegetables, and yellow fruits. They are aliphatic hydrocarbons consisting of a polyisoprene backbone.
Also Called:	Carotenes
CAS Type 1 Name:	CAS Number:	36-88-4

Carotenoids Categories.

	beta Carotene - A carotenoid that is a precursor of VITAMIN A. It is administered to reduce the severity of photosensitivity reactions in patients with erythropoietic protoporphyria (PORPHYRIA, ERYTHROPOIETIC). (From Reynolds JEF(Ed): Martindale: The Extra Pharmacopoeia (electronic version). Micromedex, Inc, Engewood, CO, 1995.)
	Retinoids - A group of tetraterpenes, with four terpene units joined head-to-tail. Biologically active members of this class are used clinically in the treatment of severe cystic ACNE; PSORIASIS; and other disorders of keratinization.
	Xanthophylls - Oxygenated forms of carotenoids. They are usually derived from alpha and beta carotene.
	zeta Carotene - A carotenoid produced in most carotenogenic organisms. It is one of several sequentially synthesized molecules that are precursors to BETA CAROTENE.

Carotenoids Medical Definitions and Terms

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